Electric-light fixture.



J. J. RAITHEL. l `IzLleofl'Bm LIGHT FIXTURE. APPLICATION FILED MAB. 26,1010.

Patented Apr. 11,1911.

lnvenhor'z. d1). Rihhk f JACOB` J. RAITHEL, or' s'r. LOUIS, MISSOURIELECTRIC-LIGHT FIXTURE.

Specification of Letters Patent.

Application led March 26, 1910. Serial No. 551,651.

tures, o which the following is a full, clear,

and exact description, reference being had to the accompanylngdrawings,- forming part of thisspeclfication'; l

My invention relates to an electric light fixture, and it has for itsobject the production of a fixture of this description comprising .asectional body that receives the lamp lsupporting arms and includesstructural features ywhereby the lamp supporting arms may be efficientlyclamped in the body Instead et' being connected thereto'by the provisionof screw threads upon the lamp supporting arms, and ythe tapping of thebody to receive the screw threaded portions of said arms.

. -F igui'e .I is in part a vertical section and in' part an elevationof my fixture. Fig. II is an enlar ed cross section taken on the lineII-II, ig. I. Fig. III is a perspective view,'on a reduced scale, of thefixture body with itsV members separated, and showing the inner ends ofthe lamp supporting arms in positions ready to be put in place withinthe body.

In the accompanying drawings :`-A designates the fixed lower section-andB the clamping rotatable upper section of the lamp supporting armreceiving body vof 'my'fixture. ,The fixed lower section A com rises aspider 1 and a ring 2, preferably ma ein- .tegral 'with said'` spider."The spider 1' is y smounted by a hollow post v5 which is in n surmountedby a tubular neck6 that is screw threaded exteriorly. In-the ring of thelower section A are transverse grooves 3 adapted to receive the lampsupporting arms 7. These grooves may be of any desirable number,according to the number of lamp supporting arms that it may be desiredto utilize in the fixture, although only two of said grooves are shownin the drawings.

4 are spurs, or studs, projectinfv from the ring 2 in the groovestherein, and which are adapted to enter into 'perforations 8 in the lampsupporting arms 7 to prevent end- `wise movement of said 'lampsupporting arms when they are seated'in said grooves, as seen in Figs. Iand II. The perforations iust mentioned are shown at the tops ofthe lampsupporting arms in Fig. III, but are will be understood that the lampsupporting arms are intended to be turned from the p0- sitions in whichthey are seen in Fig. III, in order that the perforatious may receivethe studs 4 when the arms are seated in the grooves 3.

The clamping rotatable upper section B of the fixture bod comprises aspider 9, a ring 10 carried y said spider, and corresponding in diameterto the diameter of the ring of the lower section A; and said sectionalso comprises a sleeve l1, interiorly screw threaded, and adapted to befitted to the scre\\"thieaded neck 6 of the lower section A.

Inflnounting the lamp supporting arms in thesectional body of myfixture, the -arms are seated i n the grooves provided therefor in thebody section A, with the studs 4 entered into the perforations 8 in thearms, and thereafter the section B is rotatedup'o'n the screw threadedneck 6 of the section A;

to cause said neck to enter into the sleeve 11 Patented Apr. 11, 1911.

of the section B and the ring l0 of said sec-jv the ring of the othersectionfit' comes into contact with the lamp supportingarms, andcontinued rotation ofsaid section results in the lamp supporting armsbecoming clam ed between the rings of the two sections, an to be movablyheld in their proper positions in the body of the fixture.

tion to approach the ring 2 of the section"` A. As the ring of thesection B approaches The upper section of the fixture body is connectedto a supporing stem 12 of ordinary type, and through which theelectrical contact wires extend to the neck 6 of the lower section ofthe body and therethrough to ex- `tend in diver-ging directions afterentering the hollow post 5, in order that they may lead through the lampsupport-ing arms 7.

The `fixture body is preferably incased by a' sectional shellv in theusual manner, and for which no invention is herein. claimed.

1. A lam fixture, comprising a pair of sections, eac providedlwith aclamping ring adapted to oppose the clamping ring of the other section,the sections havin screw threaded engagement with each ot er, and a lampsupporting arm clamped between said clamping rings.

2. In a lamp` fixture boda', a section comprising' a ring and a screwthreaded neck centrally located relative to said ring, and a secondsectlon comprlslng a rlng, and a screw 4threaded sleeve adjustableuponthe neck of the first mentioned section "no provide for the movement ofthe ring of the second section toward the first section.

3. In a lamp xture body, a'sect'on comprising a ring having, transversegrooves therein and studs n said grooves, and also I HOWARD (lr. Coeli,:EDNA IINN.

